JPH01296238A - Silver halide photographic sensitive material - Google Patents

Abstract

PURPOSE:To obtain the title material exhibiting excellent photographic characteristics with a high contrast and suppressed generation of fog in dot pictures by incorporating a compd. shown by a specified formula in the photosensitive material. CONSTITUTION:The compd. shown by formula I is incorporated in the photosensitive material, and the compd. contains preferably at least one of diffusion preventive groups or a group capable of promoting the absorption of a silver halide in one molecule. The diffusion preventive group preferably composed of a ballast group which is usually used for additives for a passive photography of a coupler, etc. The ballast group is composed of a group which has >=8 carbon numbers and is a relatively inactive against photographic characteristics, and is exemplified by alkyl, alkoxy, phenyl, alkylphenyl, phenoxy or alkylphenoxy group, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a silver halide photographic light-sensitive material, and particularly to a silver halide photographic light-sensitive material capable of obtaining a high contrast photographic image.

[Background of the invention]

Conventionally, silver halide photographic materials have been widely used in photolithography processes. This photolithography process involves converting a continuous tone original into a halftone image, i.e. converting the continuous tone density variations of the original into a set of halftone dots with an area proportional to this density. It is.

In this conversion process, a silver halide photographic light-sensitive material with high-contrast photographic properties is used to photograph the original through an intersection screen or contact screen, and the image is developed to form a halftone image. That's what I was doing.

In order to give an image a high-contrast characteristic, the conventional technique was
As shown in US Pat. Adjustments have been made to obtain desired photographic materials by using silver halide grains that are effective and by appropriately combining other photographic additives. The silver halide photographic light-sensitive material thus obtained is certainly stable as a light-sensitive material, and high-contrast photographic images can be obtained even when processed with a rapid processing developer. .

Further, in JP-A No. 63-29751, a high-contrast photosensitive material using a new hydrazine derivative has been proposed, and improvements have been made in terms of contrast.

However, with such silver halide photographic materials, when a continuous tone original is converted into a halftone image, sandy bottle-like fog, so-called black spots, occur in the halftone dots, which deteriorates the quality of the halftone image. This had the problem of damaging the . In order to solve this problem, conventional methods have been taken such as adding various stabilizers and inhibitors containing heteroatoms, but these are not necessarily effective. child .

[Purpose of the invention]

The present invention has been made to solve the above problems. That is, an object of the present invention is to provide a silver halide photographic material that has high contrast photographic properties and can exhibit high contrast photographic properties by suppressing fog occurring in halftone images.

[Structure of the Invention] The above objects of the present invention are achieved by a silver halide photographic material characterized by containing a compound represented by the following general formula [■].

General formula CI) p+ In the formula, R2 represents a heterocyclic residue having at least one oxygen atom, nitrogen atom, or sulfur atom, and R2-R6 are a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, or an aryl group. represents. n and m represent 0 or l.

X is a carbonyl group, a sulfonyl group, or a sulfoxy group.

It represents an imino group, and Y represents a hydroxyl group, an amino group, a carboxy group, or a mercapto group. Z represents an atom necessary to form a 5- to 6-membered ring.

Furthermore, the above general formula CI) will be explained in detail.

Specific examples of R1 include thienyl, furyl, pyrrolyl, pyrazolyl, imidazolyl, and pyridyl.

Examples include pyrimidinyl, pyrazinyl, benzothienyl, benzofuranyl, indolyl, indazolyl, benzoxasilyl, oxasilyl, thiazolyl and the like, with thienyl, furyl, pyrrolyl, pyrazolyl and the like being preferred.

R3-R6 may be the same or different and are a hydrogen atom, an alkyl group having 1 to 18 carbon atoms (methyl group, ethyl group, propyl group, butyl group, octyl group).

dodecyl group, octadecyl group, etc.), or an aryl group (eg, phenyl group).

n and m each represent 0 or 1.

X is a carbonyl group, a sulfonyl group, or a sulfoxy group.

group, N-methylimino group, N-phenylimino group, etc.)
represents. Preferably it is a carbonyl group.

Y represents a hydroxyl group, a substituted or unsubstituted amino group (amino group, methylamino group, anilino group, etc.), carboxyne group, or mercapto group. Preferably it is a hydroxyl group.

Z represents an atom necessary to form a 5- to 6-membered ring, and specific examples of the ring formed include benzene, cyclohexene, and cyclopentene, with benzene being preferred.

Various substituents can be introduced into the heterocyclic group represented by R1 having at least one nitrogen atom, sulfur atom or oxygen atom. Examples of substituents that can be introduced include halogen atoms, alkyl groups, aryl groups, alkoxy groups, aryloxy groups, acyloxy groups, alkylthio groups, arylthio groups, sulfonyl groups, alkoxycarbonyl groups, aryloxycarbonyl groups, carbamoyl groups, and sulfamoyl groups. , an acyl group, an amino group, an alkylamino group, an arylamino group, an acylamino group, a sulfonamide group, an arylaminothiocarbonylamino group, a hydroxy group, a carboxy group, a sulfo group, a nitro group, a cyano group, and the like.

The compound represented by the general formula CI) preferably contains at least one diffusion-resistant group or silver halide adsorption-promoting group in the molecule.

The diffusion-resistant group is preferably a ballast group commonly used in immobile photographic additives such as couplers. The ballast group is a group having 8 or more carbon atoms and is relatively inert to photography, and may be selected from, for example, an alkyl group, an alkoxy group, a phenyl group, an alkylphenyl group, a phenoxy group, an alkylphenoxy group, etc. I can do it.

Examples of the silver halide adsorption promoting group include groups described in US Pat. No. 4,385,108, such as a thiourea group, a thiourethane group, a heterocyclic thioamide group, a mercapto heterocyclic group, and a triazole group.

H1 of -NHNH- in general formula (1), that is, the hydrogen atom of hydrazine, is a sulfonyl group (e.g. methanesulfonyl,
toluenesulfonyl, etc.), acyl groups (e.g., acetyl, trifluorocetyl, etc.), oxalyl groups (e.g., ethoxalyl, etc.), and the compound represented by general formula [I] may be substituted with a substituent such as including things like.

Representative compounds represented by the above general formula CI) include:
There are the following. However, as a matter of course, specific compounds of general formula [I] that can be used in the present invention are:
Illustrative compounds limited to these compounds are t12Llii and H2Nt12 Next, synthesis examples of specific compounds of the present invention will be described.

The synthesis scheme for compound (6) is as follows.

This synthesis method can be carried out by referring to, for example, the synthesis method of JP-A No. 63-29751.

The raw material 5-nitro-2-thienylhydrazine is, for example, It can be synthesized by the following method.

The synthesis method of 3-nitro-2-thienylhydrazine is Jou
rnal fur Praktische Chemi
e 2C9199 (1964), and this synthesis method can also be referred to.

On the other hand, 5-nitro-2, which is the raw material for the compound (6) of the present invention,
-Furylhydrazine is Anales de la Re
al Academie de Farmacia 2
7. No. 1.47-60 (1961).

Other compounds can be similarly synthesized with reference to these documents.

The silver halide photographic light-sensitive material of the present invention contains the compound represented by the above general formula (1), but the amount of the compound represented by the general formula CI) contained in the photographic light-sensitive material of the present invention is The amount is preferably from 5 x 10-' mol to 5 x 10-' mol per mol of silver halide contained in the photographic light-sensitive material of the invention.

In particular, a range of 5 x 10-' moles to 1 x 10-' moles is preferred.

The silver halide photographic material of the present invention has at least one silver halide emulsion layer. That is, at least one silver halide emulsion layer may be provided on one side of the support, or at least one layer may be provided on each side of the support. The silver halide emulsion can be coated directly onto the support, or coated via another layer such as a hydrophilic colloid layer that does not contain the silver halide emulsion. A hydrophilic colloid layer as a protective layer may be coated on the emulsion layer. Further, the silver halide emulsion layer may be coated separately into silver halide emulsion layers having different sensitivities, for example, high sensitivity and low sensitivity. In this case, between each silver halide emulsion layer,
An intermediate layer of hydrophilic colloid may also be provided. Further, an intermediate layer may be provided between the silver halide emulsion layer and the protective layer.

That is, non-photosensitive hydrophilic colloid layers such as an intermediate layer, a protective layer, an antihalation layer, and a backing layer may be provided as necessary.

In order to incorporate the compound represented by the general formula (1') into the silver halide photographic light-sensitive material of the present invention, it is preferably contained in a hydrophilic colloid layer in the material, particularly preferably in a silver halide emulsion layer and It is preferably contained in a hydrophilic colloid layer adjacent to the silver halide emulsion layer.

However, the compound of general formula (1) above may be contained not in the silver halide emulsion layer but in another layer.

For example, it goes without saying that it may be contained in another hydrophilic colloid layer that is laminated and coated on this emulsion layer.

In the most preferred embodiment of the present invention, the compound of general formula CI) is contained in the silver halide emulsion layer, and the hydrophilic colloid contained in the silver halide emulsion layer and the hydrophilic colloid layer is gelatin or a gelatin derivative. It is a silver halide photographic material.

In order to incorporate the compound of the general formula [I] of the present invention into the silver halide emulsion layer and/or the hydrophilic colloid layer, the hydrazide compound is dissolved in appropriate water and an organic solvent and added, or added to the organic solvent. Examples include a method in which a dissolved liquid is dispersed in a hydrophilic colloid matrix such as gelatin or a gelatin derivative and then added, or a method in which the solution is added after being dispersed in latex. The present invention may use any of these methods.

When added, the compound of the above general formula [I] can obtain preferable image characteristics even when used alone. Further, even if two or more of these compounds are used in combination in an appropriate ratio, the image characteristics will not be adversely affected.

One preferred embodiment of the present invention is to add the compound of general formula CI) according to the present invention to the silver halide emulsion layer. In another preferred embodiment of the present invention, it is added to a hydrophilic colloid layer directly adjacent to a hydrophilic colloid layer containing a silver halide emulsion layer, or to a hydrophilic colloid layer adjacent via an intermediate layer.

Another method of addition is to dissolve the compound of general formula CI) in a suitable organic solvent, such as water, alcohols such as methanol or ethanol, ethers, esters, etc., and remove the halogen by an overcoating method or the like. It may also be incorporated into the silver halide photographic material by directly coating the outermost layer of the silver halide emulsion layer of the silver halide photographic material.

Next, silver halide used in the silver halide photographic material of the present invention will be explained. Silver halide of any composition can be used. For example, silver chloride, silver chlorobromide,
There are silver chloroiodobromide, pure silver bromide, and silver chloroiodobromide. The average diameter of the silver halide grains is preferably in the range of 0.05 to 0.5 μm, particularly 0.05 μm to 0.5 μm. lO
A thickness of 0.40 μm is preferable.

Although the particle size distribution of the silver halide grains used in the present invention is arbitrary, it is preferably adjusted so that the monodispersity value defined below is in the range of 1 to 30, more preferably in the range of 5 to 20.

Monodispersity is calculated by dividing the standard deviation of particle size by the average particle size by 10
It is defined as a value multiplied by 0.

For convenience, the grain size of the silver halide grains is expressed by the edge length of the cubic crystal grains.

When carrying out the present invention, for example, silver halide grains having a multilayer structure of at least two layers can be used, for example, the core part is silver chloride and the shell part is silver bromide. Conversely, it is possible to use silver chlorobromide particles in which the core portion is silver bromide and the shell portion is silver chloride. At this time, iodine can be contained in any layer, but it is preferable that iodine is contained within 5 mol%.

When preparing the silver halide emulsion of the present invention, a rhodium salt can be added to control the sensitivity or gradation. It is generally preferable to add the rhodium salt at the time of grain formation, but it may also be added at the time of chemical ripening or at the time of preparing the emulsion coating solution.

The rhodium salt used in the present invention may be a simple salt or a double salt. Typically, rhodium chloride, rhodium trichloride, rhodium ammonium chloride, etc. are used.

The amount of rhodium salt added can be freely changed depending on the required sensitivity and gradation, but it ranges from 10-9 mol to 1 mol per mol of silver.
A range of 0-' molar is useful.

Furthermore, when using a rhodium salt, other inorganic compounds such as an iridium salt, a thallium salt, a cobalt salt, a gold salt, etc. may be used in combination. Iridium salts are often used in amounts ranging from 10@-9 to 10@1 mole per mole of silver, often for the purpose of imparting high-intensity properties.

The silver halide used in the present invention can be sensitized with various chemical sensitizers.

Examples of sensitizers include activated gelatin, sulfur sensitizers (sodium thiosulfate, allylthiocarbamide, thiourea, allyl isothiacyanate, etc.), selenium sensitizers (N,N-dimethylselenourea, selenourea, etc.) , reduction sensitizers (triethylenetetramine, stannic chloride, etc.), such as potassium chlorooolite, potassium aurithiocyanate,
Various noble metal sensitizers represented by potassium chloroaurate, 2-orothio-3-methylbenzothiazolium chloride, ammonium chloroparadate, potassium chloroaurate, sodium chloroparadite, etc. are used alone or in combination. More than one species can be used in combination. When using a metal sensitizer, rhodanammonium can also be used as an auxiliary agent.

Examples of the support used in the present invention include baryta paper, polyethylene-coated paper, polypropylene synthetic paper, glass plate,
Representative examples include cellulose acetate, cellulose nitrate, polyester films such as polyethylene terephthalate, polyamide films, polypropylene films, polycarbonate films, and polystyrene films. These supports are appropriately selected depending on the intended use of the silver halide photographic material.

For developing the silver halide photographic material of the present invention, the following developing agents are used, for example.

80 +CH-CI +n Typical OH-type developing agents include hydroquinone, catechol, and pyrogallol.

In addition, typical HO-f-CH-CH-+n NHz type developers include ortho and para aminophenol or aminopyrazolone, 4-aminophenol, 2-amino-6-phenylphenol, 2-aminophenol, 2-amino-6-phenylphenol,・Amino-
4-chloro-6-phenylphenol, 4-amino-2
-phenylphenol, 3,4-diaminophenol,
3-Methyl-4,6-diaminophenol, 2゜4-cyamylsorcinol, 2.4.6-triaminophenol, N-methyl-p-aminophenol, N.β-hydroxyethyl-p-aminophenol , p-hydroxyphenylaminoacetic acid, 2-aminonaphthol and the like.

Examples of the heterocyclic developer include l-phenyl-3-pyrazolidone, l-phenyl-4,4-dimethyl-3-pyrazolidone, -7enyl-4-methyl-4-hydroxymethyl-3-pyrazolidone, and l-phenyl-4-methyl-4-hydroxymethyl-3-pyrazolidone. 4-methyl-
Examples include 4-hydroxymethyl-3-pyrazolidone.

Others: The Theory of James, T.H.
The Photographic Process 4th Edition (The Th
theory of the Photographic
Process.

Fourth Edition, pages 291-334 and Journal of the American Chemical Society.
an Chemical 5ociety) Volume 73,
3.100 (1951) etc. can be effectively used in the silver halide photographic material of the present invention.

These developers may be used alone or in combination of two or more types, but it is preferable to use two or more types in combination. Furthermore, the effects of the present invention will not be impaired even if a sulfite salt such as potassium sulfite or ammonium sulfite is used as a preservative in the developer used in processing the photosensitive material of the present invention.

Furthermore, hydroxylamine and hydrazide compounds may be used as preservatives. In addition, adjusting the pH with caustic alkali, alkali carbonate, or amines used in general black-and-white developers and providing a buffer function, inorganic development inhibitors such as brompotali, organic development inhibitors such as benzotriazole, ethylenediaminetetraacetic acid, etc. metal ion scavengers, methanol, ethanol, benzyl alcohol, development accelerators such as polyalkylene oxide, sodium alkylaryl sulfonate, natural saponin,
It is optional to add surfactants such as saccharides or alkyl esters of the aforementioned compounds, hardening agents such as glutaraldehyde, formalin, glyoxal, and ionic strength regulators such as sodium sulfate.

The developer used in the present invention may contain alkanolamines or glycols as an organic solvent.

〔Example〕

Examples of the present invention will be described below. It goes without saying that the present invention is not limited only to the following examples.

Example 1 An exemplary compound represented by the general formula CI) and a comparative compound (the types of which are shown in Table 1 below) were added to the silver halide emulsion layer of a photographic light-sensitive material in the following manner. Samples were prepared.

[Preparation of silver halide photographic material]

100μm thick with 0.1μm thick undercoat layer on both sides
A silver halide emulsion layer having the following formulation (1) was coated on one of the undercoat layers of the polyethylene tereftate film in an amount of gelatin of 1.5 g/m" and silver of 3.3 g/m". On top of that, a protective layer of the following formulation (2) was applied so that the amount of gelatin was 1.0 g/m'', and on the other undercoat layer on the opposite side, the following formulation (3) was applied. ), apply a backing layer with a gelatin amount of 3.5 g/ffl'', and then apply a protective layer of the following formulation (4) on top of it with a gelatin amount of 1 g/m''. Sample No., 1=
I got 18.

Prescription (1) [Silver halide emulsion layer composition] Gelatin
1.5g/m' silver chlorobromide (AgC
Q60 mol%, AgBr40 mol%, monodispersity -12,
Contains 1 mole of Rh and Ir) 3.3
g/III” antifoggant=4-hydroxy-6-methyl-1,3,
3a,7-chitrazaindene 0.309/I11" Compound of the invention or comparative compound: Surfactant according to Table 1: Saponin 0.1 g/m2 Latex polymer: Polyethyl acrylate-acrylic acid copolymer 1 g/m" Sensitizing dye :Four types of the following structural formulas (a) to (d) were used in combination.

(a) Regular sensitizing dye U3Na (b) Ortho sensitizing dye (c) Panchromatic sensitizing dye (d) Infrared sensitizing dye Development regulator: Nonylphenoxy polyethylene glycol 10 mg/m
'5-Methylbenzotriazole 7mg/m"Adenine 3mg/m"Guanine 2mg/m"Uracil 2mg/m'Atenosine 2
mg/l112 1-phenyl-5-mercaptotetrazole 3mg/m
"Hydroquinone 100mg/m"
Phenidone 10mg/m" Gallic acid butyl ester 40mg/m" Promethacin hydrochloride 43mg/m2 Thiaramide hydrochloride 36mg/m" n-butyljetanolamine 10mg/m" Prescription (2
) [Emulsion protective layer composition] Gelatin 1.0 g/m" Matting agent: Polymethyl methacrylate with an average particle size of 3.0 to 5.0 μm 0.05 g/m" Surfactant: n
-Sodium dodecylbenzenesulfonate
0.01g/m” Charge modifier: CsF+yCOONH
a 10ml1g/ll5NaCQ100a+
g/m2 LiC1230mg/m" ITO: Mixed oxide of indium and tin with an indium content of 95% or more 30mg/m" Prescription stabilizer: l-Fair-5-Mercaptotetrazole 3+*g/s' Hard Membrane agent: Formalin 0.03g/a” prescription (3)
[Backing layer composition] Gelatin 3.5g/m" Surfactant: Saponin 0.1g/s" Hardening agent: Glyoxal O, 1g/m" formulation (
4) [Backing protective layer composition] Gelatin Ig/m" Matting agent: Polymethyl methacrylate with an average particle size of 3.0 to 5.0 μm) 0.5 g/a" Surfactant: p-
Sodium dodecylbenzenesulfonate 0
．． 01g/m”(cos)x C5H17SO2NH(CH2)3N-CI2COOe
Q, Q1g/I11!・Development regulator: 5-nitroindazole 0.012a+/g" 5-methylbenzotriazole 0.02g/a+" l-phenyl-5-mercaptotetrazole 0.005g/m" Hardener: Formalin 0.03g/m A halftone quality test was conducted on the obtained sample using the method described below.

(Testing method for halftone dot quality) Attach a part of the screen (150 lines/inch) with a halftone dot area of 50% to the step wedge, place the sample in close contact with this screen, and expose the sample to a xenon light source for 5 seconds. The sample was developed under the following conditions in an automatic processing machine for quick processing using the developer and fixer listed below, and the quality of the halftone dots on the sample was observed with a 100x magnifying glass. "
5" rank, followed by "4", "3", "2", "l"
5 ranks.

Note that ranks "l" and "2" are levels that are not preferred in practical terms.

Fog in the halftone dots is also evaluated in the same way, and the highest rank is "5" when there are no black spots in the halftone dots, and the rank is "4" depending on the degree of occurrence of black spots in the halftone dots. ”,
The evaluation was performed by lowering the ranks sequentially from "3" to "2" to rlJ. Note that in ranks rlJ and "2", the black bins are also large, which is at a level that is not practical.

(Developer formulation) (Composition A) Pure water (ion exchange water) 150ml 12-functional ethylenediaminetetraacetic acid disodium salt g Diethylene glycol 50g phosphoric acid
10g potassium sulfite (55% w/v aqueous solution) 100m2 potassium carbonate 50g hydroquinone
15g 5-methylbenzotriazole 20G+sgl-7enyl-5-mercaptotetrazole 0mg Potassium hydroxide Amount to adjust the pH of the working solution to 11.5 Sodium bromide 3g (composition) Pure water (ion-exchanged water) 31Il12
Diethylene glycol 50g 3-diethylamino-1,2-propanediol 5g Ethylenediaminetetraacetic acid disodium salt 5mg Acetic acid (90% aqueous solution) 0.3m+1
5-nitroindazole l 10mg2
-Sodium mercaptobenzimidazole-5-sulfonate 30mg1-phenyl-3-pyrazolidone 500mgN-methyl-p-aminophenol 25mgWater 50mg when using developer
The above composition A1 was dissolved in 0 mf2 in the order of composition, finished to Ic, and used.

(Fixer formulation) (Composition A) Ammonium thiosulfate (72.5% W/V aqueous solution) 24
0+a12 Sodium sulfite 17g Sodium acetate trihydrate 6.5g Boric acid
6g Sodium citrate dihydrate
2g acetic acid (90% w/w aqueous solution)
13.6+J (composition) Pure water (ion exchange water) 17 mQ sulfuric acid (50% w/w aqueous solution) 4.7 g aluminum sulfate (A Q, 20. aqueous solution with a converted content of 8.1% w/v)
26.5 g When using a fixer, the above composition A1 was dissolved in 500 mA of water in the order of composition, finished to IQ, and used. This fixer p
H was approximately 4.3.

(Development processing conditions) (Process) (Temperature) (Time) Development
Fixation at 40°C for 15 seconds Fixation at 35°C at 15°C Wash at room temperature for 20 seconds The following compounds (a) to (c) were used as comparative compounds added to the silver halide emulsion layer in formulation (1).

(,) Ha(b) ^ (Test results) Table 1 shows samples Nos. 1 to 15 of the present invention and samples Nos. 16 to 18 prepared using the above comparative compounds, in their silver halide emulsion layers. The added compounds and their amounts are shown. The compounds of general formula [I] in Table 1 are indicated by the numbers of the above-mentioned exemplified compounds.

Table 2 shows the results of the halftone quality test, ranked for each of the above samples.

As is clear from Table 2, in terms of halftone quality, samples Nos. 1 to 15 according to the present invention all rank "4".
'', rank r5J shows more results, and comparative samples Nos. 16 to 18 all show results of rank "3". Considering that the ranks rlJ and r2J are at a level that cannot withstand practical use, sample No. 16 to 1
Although sample No. 8 cannot be said to have good halftone dot quality, sample No. 1"15 according to the present invention was found to have extremely high halftone dot quality.

Also, regarding the occurrence of black bottles, which is an indicator of Capri,
Sample Nos. 1 to 15 according to the present invention are all ranked "
5", showing extremely good results with no fog, whereas comparative samples 16 to 18 all ranked
Table-1 Table-2 Example-2 In sample No. 2 and sample No. 4 of Example-1,
Samples Nos. 19 to 28 were prepared by changing the monodispersity (uniform grain size) of silver halide grains from 4 to 40, and experiments were conducted.
I.

In addition, when preparing the particles, rhodium was added at 8 × 10-' mol/
1 mol of Ag and 3 x 10-' mol of iridium/Ag
1 mol was added according to a conventional method. The silver halide composition here is a silver chlorobromide grain composition containing 98 mol% of silver chloride, and instead of adding sensitizing dyes ((a), (b), (c), (d)), the following A structural sensitizing dye was added.

Desensitizing dye (the sum of the polarographic anode potential and cathode potential is positive) Furthermore, in the protective layer, 50 mg 7J of the following filter dye is added.
In addition, 100 mg/+'' of δIJ3Na and the following ultraviolet absorbing dye were added.

The rest was the same as Sample No. 2 and Sample No. 4, and for example, the same exemplified compounds N022 and No. 6 were used as the compounds represented by the general formula CI). The monodispersity can be adjusted by a conventional controlled double jet method by changing the pH potential at the time of charging the particles and the amount of AgΦ ions and halide ions supplied.

Exposure and development were also carried out in the same manner as in Example-1, and the photographic performance was evaluated.

However, in this example, the prepared sample was exposed to light using an ultra-high pressure mercury lamp with an energy of 5 mJ.

The evaluation results are shown in Table-3. Sample No. 19 to No. 2
Sample No. 8 had a good halftone dot quality of 4.4 to 5 and a black pin of 4.5 to 5, indicating that the halftone dot quality was high and there was very little fog.

Table 3 [Effects of the Invention] According to the present invention, by incorporating the compound represented by the general formula [I] into a silver halide photographic light-sensitive material,
It is possible to obtain an excellent photosensitive material that has the high contrast characteristics of a photographic image and has high halftone dot quality.

Claims (1)

[Claims] A silver halide photographic material containing a compound represented by the following general formula [I]. General formula [I] ▲There are mathematical formulas, chemical formulas, tables, etc.▼ In the formula, R_1 represents a heterocyclic residue having at least one oxygen atom, nitrogen atom, or sulfur atom, and R_2 to R_5 are hydrogen atoms and carbon atoms with 1 Represents an alkyl group of up to 18 or an aryl group. n and m represent 0 or 1. X is a carbonyl group, sulfonyl group, sulfoxy group, ▲ Numerical formula, chemical formula, table, etc. ▼ (R_6 is R_2 to R_
5) represents an imino group, and Y represents a hydroxyl group, an amino group, a carboxy group, or a mercapto group. Z represents an atom necessary to form a 5- to 6-membered ring.